VS
Name
—
Ca₂Al₃[Si₂O₇][SiO₄]O(OH)
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
6–7
Mohs hardness
—
3.15–3.36
Specific gravity
—
white
Streak
—
Vitreous, pearly on cleavage
Luster
—
{010}, perfect; {100}, imperfect
Cleavage
—
Pnma
Space group
—
Epidote
Structural group
—
Zo · Grandfathered
IMA
—
1805
Named in
—
Green, Brown, Gray, Blue, Pink, Purple
Typical colors
—
Ca · Al · Si · O · H
Elements
—